Malicious PDF — malware analysis report

Static analysis result for SHA-256 903a071dbb041cbb…

MALICIOUS

PDF

73.1 KB Created: 2021-02-26 02:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: de490a0b7dc76daa41acd317fd838ea7 SHA-1: 4987a1d43b5ce716d42bdf5cc6a313ae4d873128 SHA-256: 903a071dbb041cbb9c94e78ddbf5c09dfd342a1ba3ba87747cc6f2555dee0003
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=sailrite+fabricator+deluxe PDF link annotation
    • http://fasad-dom.site/literature_an_introduction_to_fictio3i8hn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393759/normal_600831f444f6e.pdfIn PDF document text
    • http://znalomstvavip.site/template_desain_kalender_2020_cdr09m0r.pdfIn PDF document text
    • http://ridunculus.com/10x10_square_graph_paperp69gm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467004/normal_601d2a73d45a7.pdfIn PDF document text
    • http://idealica-italiauficiale.website/eso_thieves_guild_questline_guide9bqct.pdfIn PDF document text
    • https://cdn.sqhk.co/govonesed/yZhkijV/1613091787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488592/normal_6027547c5160e.pdfIn PDF document text
    • http://lazirog.mywebcommunity.org/upenn_logo_asymmetrical.pdfIn PDF document text
    • http://haifaiv.ru/bandicam_gratis_full_version8abte.pdfIn PDF document text
    • http://itagreen.fun/visesagujumokvki.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/3426771491.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/messenger_apk_for_android_5.pdfIn PDF document text
    • http://tivakifuzir.atwebpages.com/ronibere.pdfIn PDF document text
    • https://s3.amazonaws.com/latufenaw/93743749940.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e28a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE28A 5148 bytes
SHA-256: 50febe0f26649460c6ce38c9a6f52d83535deca2646c26edd8bd8c2a401ce369
font_01_sfnt_off0000f41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41C 10432 bytes
SHA-256: 3dd4394b445ddb5b837b937967c893985df6231be1e654ea096f7598afe6a643